Dr. Mark Conrad Gregerson , MD
Orthopaedic Surgery • Moose Lake, MN
4572 County Road 61
Moose Lake, MN 557679401
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Mark Gregerson is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on June 14, 2006; this date does not establish years in practice.
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Published CMS data list 14 Original Medicare Part B services in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Published rows only; this is not a quality measure.
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Published Part B service records, 2018:
- 99221 — Initial hospital care with straightforward or low level of medical decision making, per day: 14 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2017 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2018). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 23 Medicare Part D prescriptions, including refills, in 2020.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Published rows only; this is not a quality measure.
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Published Part D records, 2020:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 11 in 2017 to 14 in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2018.
Practice Location & Contact Primary Location
4572 County Road 61
Moose Lake, MN 557679401
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Glencoe, MN. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $1,290 in 2018
The total amount Medicare approved for these services in 2018. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018.
Paid by Medicare
About $1,025 in 2018
The part of the Medicare-allowed amount that Medicare itself paid in 2018, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018.
30-day fills
23 standardized 30-day fills in 2020
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$208 in 2020
The total cost of these prescriptions in 2020, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Moose Lake and Minnesota
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Gregerson are from 2018.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Gregerson are from 2020.
1 active clinicians are listed under Orthopaedic Surgery with a practice address in Moose Lake, MN (647 in Minnesota).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 11 in 2017 to 14 in 2018.
- 2017: 11
- 2018: 14
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Medicare-allowed amount
Medicare-allowed amount increased 29% from $1,002 in 2017 to $1,290 in 2018.
- 2017: $1,002
- 2018: $1,290
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Paid by Medicare
Paid by Medicare went from $795 in 2017 to $1,025 in 2018.
- 2017: $795
- 2018: $1,025
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 84% from 146 in 2016 to 23 in 2020.
- 2016: 146
- 2017: 139
- 2018: 100
- 2019: 86
- 2020: 23
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30-day fills
30-day fills decreased 85% from 153 in 2016 to 23 in 2020.
- 2016: 153
- 2017: 139
- 2018: 100
- 2019: 86
- 2020: 23
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Part D drug cost
Part D drug cost decreased 90% from $2,127 in 2016 to $208 in 2020.
- 2016: $2,127
- 2017: $5,845
- 2018: $5,325
- 2019: $5,865
- 2020: $208
Sources: CMS Medicare Physician & Other Practitioners (2018), CMS Medicare Part D Prescribers (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2017 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2018; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99221
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes
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14 | 13 | $207.00 | $92.11 |
Source: CMS Part B by Provider and Service, 2018; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2020.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 23 | 146 | $207.91 | 19 |
Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Additional State Medicaid & Healthcare Payer Identifiers
Secondary Practice Locations
1805 Hennepin Ave N
Glencoe, MN 553361416
Phone: 3208643121
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Anesthetist, Certified Registered
Nurse Practitioner - Family
Advanced Practice Registered Nurse, Certified Nurse Practitioner
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 4572 COUNTY ROAD 61, MOOSE LAKE, MN 557679401 (Tel: 2184854481)
Registered at 4572 COUNTY ROAD 61, MOOSE LAKE, MN 557679401 (Tel: 2184854481)
NPI status registered as active in NPPES database
Registered at 1805 HENNEPIN AVE N, GLENCOE, MN 553361416 (Tel: 3208643121)
Registered at 2854 HIGHWAY 55, SUITE 130, EAGAN, MN 551211405 (Tel: 6512244930)
Recorded as MARK GREGERSON, MD
Orthopaedic Surgery (license number reported to NPPES: MN 29943)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
4572 County Road 61
Moose Lake, MN 557679401
Phone: 2184854481